/*
 * Copyright (c) 2020, 2021 Oracle and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.helidon.config.spi;

/**
 * Type of changes that can happen in a {@link io.helidon.config.spi.PollingStrategy.Polled}
 * components.
 * The {@link PollingStrategy} may use this information to modify its
 * behavior.
 */
public enum ChangeEventType {
    /**
     * Nothing is changed.
     */
    UNCHANGED,
    /**
     * The content is modified.
     */
    CHANGED,
    /**
     * The content is not present.
     */
    DELETED,
    /**
     * The content is now present (was deleted).
     */
    CREATED
}
